Gree Ultra Heat GMV-V72W/A-F, Service Manual

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Ultra Heat GMV VRF Technical Service Manual MAINTENANCE
132
After the compressor and oil separator are removed, check oil quality. If oils are contaminated,
replace the compressor, oil separator, and gas/liquid separator. If oil changes to black, check oils of
other modular units. The check procedure is similar to the preceding.
Note: Before replacing the faulty compressors, make sure to block their openings with tapes. They
should be kept intact for further analysis.
Step 5: Check system parts.
If system oil is contaminated, check unit parts, including oil separator, gas/liquid separator, and
storage tank.
(1) Check oil separator.
Remove the oil separator. For the removal procedure, refer to step 4. Tilt the separator to draw oil
out into a container. Block the container for further factory inspection.
(2) Check gas/liquid separator.
After the gas/liquid separator is taken out, check whether it contains impurities. The check
procedure is as follows:
1
、
Weld the oil
pipe.
2
、
Weld the inlet and
outlet pipes of the
oil separator.
3
、
Unscrew the oil
separator.
3
、
Remove the
gas/liquid pipe.
1
、
Weld the inlet and
outlet pipes of the
gas separator.
2
、
Unscrew the
gas/liquid pipe.